Adding to Malke's post:
Excerpted from MS KB283111
<Q>
In Windows XP Home Edition, you cannot change the actual name of a user account, only the name that is displayed on the Welcome screen. In all other versions of Windows XP, you can change the account name:
1.Right-click My Computer, and then click Manage.
2.Click Local Users and Groups to expand it.
3.Click Users.
4.Right-click the account that you want to change, and then click Rename.
5.At a command prompt, run the set command; the %HomePath% variable still points to the old user name.
NOTE: This does not change the name of the folder that appears under the Documents and Settings folder for the user.
</Q>
© 2007 Microsoft Corporation. All rights reserved.
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Regards,
Ramesh Srinivasan, Microsoft MVP [Windows Shell/User]
Windows® Troubleshooting
http://www.winhelponline.com
I created a user account at one point and later decided to change its name.
However, you can still log onto Windows using the old account name. How can
I eliminate that account name so that only the new name is usable?